The result of the backup doping test for Tour de France cycling champion Floyd Landis of the United States will be announced Saturday.

International Cycling Union spokesman Enrico Carpani said the analysis of Landis's so-called "B" sample is expected to take place Thursday through Saturday at an anti-doping lab outside Paris.

Landis tested positive for an elevated ratio of testosterone to epitestosterone following the 17th stage of the Tour de France, where he staged a remarkable comeback in the Alps to make up for a poor performance the day before. If the "B" sample is negative, Landis would be cleared. If it is positive, he could be stripped of his Tour victory and banned for two years.

The 30-year-old Landis has maintained his innocence and said he will undergo further tests to prove it.

Oscar Pereiro of Spain, who finished second in the Tour de France, would be declared the winner if Landis loses the title. It would be the first time in the history of the Tour that the winner has been disqualified for doping.